Rocker Jimmy Page at the Mandarin Oriental smiling at an astonished passer-by who could only muster, “Jimmy?” . . . Matt Dillon at Dizzy’s Club Coca-Cola . . . Hugh Jackman and wife Deborra-Lee Furness interrupting their tour of a $3.5 million Water Mill home while house-hunting in the Hamptons to check on the welfare of their dog, who was left waiting outside . . . “Bachelorette” Ali Fedotowsky at the bar at Old Homestead Steakhouse . . . John Legend and four friends at Rosemary’s on Greenwich Avenue.